DOKK / manpages / debian 10 / allegro5-doc / al_draw_arc.3alleg5.en
al_draw_arc(3alleg5) al_draw_arc(3alleg5)

al_draw_arc - Allegro 5 API

#include <allegro5/allegro_primitives.h>
void al_draw_arc(float cx, float cy, float r, float start_theta,
   float delta_theta, ALLEGRO_COLOR color, float thickness)
    

Draws an arc.

Parameters:

cx, cy - Center of the arc
r - Radius of the arc
color - Color of the arc
start_theta - The initial angle from which the arc is calculated in radians
delta_theta - Angular span of the arc in radians (pass a negative number to switch direction)
thickness - Thickness of the arc, pass <= 0 to draw hairline arc

al_calculate_arc(3alleg5), al_draw_elliptical_arc(3alleg5)

Allegro reference manual